<template>
    <div>
        <div class="mui-numbox" data-numbox-min="1">
            <button class="mui-btn mui-btn-numbox-minus" type="button" >-</button>
            <input class="mui-input-numbox" type="number" :value="initCount" 
            @change="countChanged" ref="numbox"/>
            <button class="mui-btn mui-btn-numbox-plus" type="button">+</button>
        </div>
    </div>
</template>

<script> 
    import mui from '../../lib/mui/js/mui.min.js'
    export default {
        mounted(){
            //  mui在mui.init()中会自动初始化基本控件,但是 动态添加的Numbox组件需要手动初始化
            mui(".mui-numbox").numbox();
                
        },
        methods:{
            countChanged(){
                // 每当数量改变，立即把最新的数量同步到购物车的store中，覆盖之前的数量 
                this.$store.commit("updateshopCar",{
                    id:this.goodsid,
                    count:this.$refs.numbox.value
                    });
            }
        },
        props:["initCount","goodsid"]     
    }
</script>

<style lang="less">
    .mui-numbox{
        height: 30px!important;
    }
</style>
